172 (number)
 | This article may contain indiscriminate, excessive, or irrelevant examples. (March 2010) |
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List of numbers — Integers ← 0 100 200 300 400 500 600 700 800 900 → | ||||
| Cardinal | one hundred seventy-two | |||
| Ordinal | 172nd (one hundred seventy-second) | |||
| Factorization | 22 × 43 | |||
| Divisors | 1, 2, 4, 43, 86, 172 | |||
| Greek numeral | ΡΟΒ´ | |||
| Roman numeral | CLXXII | |||
| Binary | 101011002 | |||
| Ternary | 201013 | |||
| Octal | 2548 | |||
| Duodecimal | 12412 | |||
| Hexadecimal | AC16 | |||
172 (one hundred [and] seventy-two) is the natural number following 171 and preceding 173.
In mathematics[]
172 is an even number, a composite number and a deficient number. It is also a 30-gonal number.[1]
172 is a noncototient integer,[2] as well as the sum of Euler's totient function φ(x) over the first twenty-three integers. 172 is also a member of the Lazy Caterer's Sequence.[3]
172 is a repdigit in base 6 (444), as well as in bases 42, 85, and 171.
In the military[]
- 172d Airlift Wing airlift of the United States Air National Guard at Jackson-Evers International Airport
- 172nd Battalion (Rocky Mountain Rangers), CEF unit of the Canadian Expeditionary Force during World War I
- 172nd Fighter Squadron unit of the Michigan Air National Guard
- 172nd Infantry Brigade of the United States Army at Grafenwöhr, Germany
- USNS Apache (T-ATF-172) is a United States Navy Powhatan-class tugboat
- USNS Phoenix (T-AG-172) was a United States Navy Phoenix-class miscellaneous auxiliary ship following World War II
- USS Anthony (DD-172) was a United States Navy Wickes-class destroyer following World War I
- USS Cape Johnson (AP-172) was a United States Navy troop transport ship during World War II
- USS Clarion (AK-172) was a United States Navy cargo ship in World War II
- USS Cooner (DE-172) was a United States Navy Cannon-class destroyer escort ship during World War II
- USS Grimes (APA-172) was a United States Navy Haskell-class attack transport during World War II
- USS Porpoise (SS-172) was a United States Navy Porpoise-class diesel-electric submarine during World War II
In transportation[]
- British Rail Class 172
- The London Buses headquarters at 172 Buckingham Palace Road
- The East 172nd Avenue light rail station on the MAX Blue Line in Gresham, Oregon
- The Cessna 172 Skyhawk 4-seat, single-engine aircraft. More Cessna 172s were built than any other aircraft
- Cessna models: 172, 172A, 172AB, 172C, 172D, 172E, 172F, 172G, 172H, 172I, 172J, 172K, 172L, 172M, 172N, 172O, 172P, 172Q Cutlass, 172R, 172RG, and 172S
- The planned diesel-powered Cessna 172TD
- Aviation frequency radio exchange (one-seventy-two) associated with the Cessna 172
In other fields[]
172 is also:
- The year AD 172 or 172 BC
- The atomic number of an element temporarily called Unseptbium[4]
- 172 Baucis is a large S-type Main belt asteroid
See also[]
- 172 (disambiguation)
- Mir-172 microRNA precursor family
- List of highways numbered 172
- United States Supreme Court cases, Volume 172
- United Nations Security Council Resolution 172
- Quincy, Illinois Public School District 172
External links[]
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Wikimedia Commons has media related to 172 (number). |
- Number Facts and Trivia: 172
- The Number 172
- Number Gossip: 172
- The Positive Integer 172
- Prime curiosities: 172
- VirtueScience: 172
References[]
- ^ "Sloane's A254474 : 30-gonal numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-26.
- ^ "Sloane's A005278 : Noncototients". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-26.
- ^ "Sloane's A000124 : Central polygonal numbers (the Lazy Caterer's sequence)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-26.
- ^ [1]
Categories:
- Integers